82% (2000)

70% (2001)

71% (1992)

72% (2004)

67% (2011)

58% (2012)

68% (2001)

59% (1994)

57% (2009)

56% (2013)

64% (2010)

77% (1998)

76% (1988)

73% (1995)

56% (2017)

63% (2014)

68% (1999)

55% (2008)

70% (2005)

63% (2016)